<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 4.3.2 or newer
 *
 * @package		CodeIgniter
 * @author		ExpressionEngine Dev Team
 * @copyright	Copyright (c) 2008 - 2009, EllisLab, Inc.
 * @license		http://codeigniter.com/user_guide/license.html
 * @link		http://codeigniter.com
 * @since		Version 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * CodeIgniter Profiler Class
 *
 * This class enables you to display benchmark, query, and other data
 * in order to help with debugging and optimization.
 *
 * Note: At some point it would be good to move all the HTML in this class
 * into a set of template files in order to allow customization.
 *
 * @package		CodeIgniter
 * @subpackage	Libraries
 * @category	Libraries
 * @author		ExpressionEngine Dev Team
 * @link		http://codeigniter.com/user_guide/general/profiling.html
 */
class CI_Profiler {

  var $CI;

  function CI_Profiler() {
    $this->CI =& get_instance();
    $this->CI->load->language('profiler');
  }

  // --------------------------------------------------------------------

  /**
   * Auto Profiler
   *
   * This function cycles through the entire array of mark points and
   * matches any two points that are named identically (ending in "_start"
   * and "_end" respectively).  It then compiles the execution times for
   * all points and returns it as an array
   *
   * @access	private
   * @return	array
   */
  function _compile_benchmarks() {
    $profile = array();
    foreach ($this->CI->benchmark->marker as $key => $val) {
    // We match the "end" marker so that the list ends
    // up in the order that it was defined
      if (preg_match("/(.+?)_end/i", $key, $match)) {
        if (isset($this->CI->benchmark->marker[$match[1].'_end']) AND isset($this->CI->benchmark->marker[$match[1].'_start'])) {
          $profile[$match[1]] = $this->CI->benchmark->elapsed_time($match[1].'_start', $key);
        }
      }
    }

    // Build a table containing the profile data.
    // Note: At some point we should turn this into a template that can
    // be modified.  We also might want to make this data available to be logged

    $output  = "\n\n";
    $output .= '<fieldset style="border:1px solid #990000;padding:6px 10px 10px 10px;margin:0 0 20px 0;background-color:#eee">';
    $output .= "\n";
    $output .= '<legend style="color:#990000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_benchmarks').'&nbsp;&nbsp;</legend>';
    $output .= "\n";
    $output .= "\n\n<table cellpadding='4' cellspacing='1' border='0' width='100%'>\n";

    foreach ($profile as $key => $val) {
      $key = ucwords(str_replace(array('_', '-'), ' ', $key));
      $output .= "<tr><td width='50%' style='color:#000;font-weight:bold;background-color:#ddd;'>".$key."&nbsp;&nbsp;</td><td width='50%' style='color:#990000;font-weight:normal;background-color:#ddd;'>".$val."</td></tr>\n";
    }

    $output .= "</table>\n";
    $output .= "</fieldset>";

    return $output;
  }

  // --------------------------------------------------------------------

  /**
   * Compile Queries
   *
   * @access	private
   * @return	string
   */
  function _compile_queries() {
    $dbs = array();

    // Let's determine which databases are currently connected to
    foreach (get_object_vars($this->CI) as $CI_object) {
      if (is_object($CI_object) && is_subclass_of(get_class($CI_object), 'CI_DB') ) {
        $dbs[] = $CI_object;
      }
    }

    if (count($dbs) == 0) {
      $output  = "\n\n";
      $output .= '<fieldset style="border:1px solid #0000FF;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
      $output .= "\n";
      $output .= '<legend style="color:#0000FF;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_queries').'&nbsp;&nbsp;</legend>';
      $output .= "\n";
      $output .= "\n\n<table cellpadding='4' cellspacing='1' border='0' width='100%'>\n";
      $output .="<tr><td width='100%' style='color:#0000FF;font-weight:normal;background-color:#eee;'>".$this->CI->lang->line('profiler_no_db')."</td></tr>\n";
      $output .= "</table>\n";
      $output .= "</fieldset>";

      return $output;
    }

    // Load the text helper so we can highlight the SQL
    $this->CI->load->helper('text');

    // Key words we want bolded
    $highlight = array('SELECT', 'DISTINCT', 'FROM', 'WHERE', 'AND', 'LEFT&nbsp;JOIN', 'ORDER&nbsp;BY', 'GROUP&nbsp;BY', 'LIMIT', 'INSERT', 'INTO', 'VALUES', 'UPDATE', 'OR', 'HAVING', 'OFFSET', 'NOT&nbsp;IN', 'IN', 'LIKE', 'NOT&nbsp;LIKE', 'COUNT', 'MAX', 'MIN', 'ON', 'AS', 'AVG', 'SUM', '(', ')');

    $output  = "\n\n";

    foreach ($dbs as $db) {
      $output .= '<fieldset style="border:1px solid #0000FF;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
      $output .= "\n";
      $output .= '<legend style="color:#0000FF;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_database').':&nbsp; '.$db->database.'&nbsp;&nbsp;&nbsp;'.$this->CI->lang->line('profiler_queries').': '.count($this->CI->db->queries).'&nbsp;&nbsp;&nbsp;</legend>';
      $output .= "\n";
      $output .= "\n\n<table cellpadding='4' cellspacing='1' border='0' width='100%'>\n";

      if (count($db->queries) == 0) {
        $output .= "<tr><td width='100%' style='color:#0000FF;font-weight:normal;background-color:#eee;'>".$this->CI->lang->line('profiler_no_queries')."</td></tr>\n";
      }
      else {
        foreach ($db->queries as $key => $val) {
          $time = number_format($db->query_times[$key], 4);

          $val = highlight_code($val, ENT_QUOTES);

          foreach ($highlight as $bold) {
            $val = str_replace($bold, '<strong>'.$bold.'</strong>', $val);
          }

          $output .= "<tr><td width='1%' valign='top' style='color:#990000;font-weight:normal;background-color:#ddd;'>".$time."&nbsp;&nbsp;</td><td style='color:#000;font-weight:normal;background-color:#ddd;'>".$val."</td></tr>\n";
        }
      }

      $output .= "</table>\n";
      $output .= "</fieldset>";

    }

    return $output;
  }


  // --------------------------------------------------------------------

  /**
   * Compile $_GET Data
   *
   * @access	private
   * @return	string
   */
  function _compile_get() {
    $output  = "\n\n";
    $output .= '<fieldset style="border:1px solid #cd6e00;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
    $output .= "\n";
    $output .= '<legend style="color:#cd6e00;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_get_data').'&nbsp;&nbsp;</legend>';
    $output .= "\n";

    if (count($_GET) == 0) {
      $output .= "<div style='color:#cd6e00;font-weight:normal;padding:4px 0 4px 0'>".$this->CI->lang->line('profiler_no_get')."</div>";
    }
    else {
      $output .= "\n\n<table cellpadding='4' cellspacing='1' border='0' width='100%'>\n";

      foreach ($_GET as $key => $val) {
        if ( ! is_numeric($key)) {
          $key = "'".$key."'";
        }

        $output .= "<tr><td width='50%' style='color:#000;background-color:#ddd;'>&#36;_GET[".$key."]&nbsp;&nbsp; </td><td width='50%' style='color:#cd6e00;font-weight:normal;background-color:#ddd;'>";
        if (is_array($val)) {
          $output .= "<pre>" . htmlspecialchars(stripslashes(print_r($val, true))) . "</pre>";
        }
        else {
          $output .= htmlspecialchars(stripslashes($val));
        }
        $output .= "</td></tr>\n";
      }

      $output .= "</table>\n";
    }
    $output .= "</fieldset>";

    return $output;
  }

  // --------------------------------------------------------------------

  /**
   * Compile $_POST Data
   *
   * @access	private
   * @return	string
   */
  function _compile_post() {
    $output  = "\n\n";
    $output .= '<fieldset style="border:1px solid #009900;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
    $output .= "\n";
    $output .= '<legend style="color:#009900;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_post_data').'&nbsp;&nbsp;</legend>';
    $output .= "\n";

    if (count($_POST) == 0) {
      $output .= "<div style='color:#009900;font-weight:normal;padding:4px 0 4px 0'>".$this->CI->lang->line('profiler_no_post')."</div>";
    }
    else {
      $output .= "\n\n<table cellpadding='4' cellspacing='1' border='0' width='100%'>\n";

      foreach ($_POST as $key => $val) {
        if ( ! is_numeric($key)) {
          $key = "'".$key."'";
        }

        $output .= "<tr><td width='50%' style='color:#000;background-color:#ddd;'>&#36;_POST[".$key."]&nbsp;&nbsp; </td><td width='50%' style='color:#009900;font-weight:normal;background-color:#ddd;'>";
        if (is_array($val)) {
          $output .= "<pre>" . htmlspecialchars(stripslashes(print_r($val, true))) . "</pre>";
        }
        else {
          $output .= htmlspecialchars(stripslashes($val));
        }
        $output .= "</td></tr>\n";
      }

      $output .= "</table>\n";
    }
    $output .= "</fieldset>";

    return $output;
  }

  // --------------------------------------------------------------------

  /**
   * Show query string
   *
   * @access	private
   * @return	string
   */
  function _compile_uri_string() {
    $output  = "\n\n";
    $output .= '<fieldset style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
    $output .= "\n";
    $output .= '<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_uri_string').'&nbsp;&nbsp;</legend>';
    $output .= "\n";

    if ($this->CI->uri->uri_string == '') {
      $output .= "<div style='color:#000;font-weight:normal;padding:4px 0 4px 0'>".$this->CI->lang->line('profiler_no_uri')."</div>";
    }
    else {
      $output .= "<div style='color:#000;font-weight:normal;padding:4px 0 4px 0'>".$this->CI->uri->uri_string."</div>";
    }

    $output .= "</fieldset>";

    return $output;
  }

  // --------------------------------------------------------------------

  /**
   * Show the controller and function that were called
   *
   * @access	private
   * @return	string
   */
  function _compile_controller_info() {
    $output  = "\n\n";
    $output .= '<fieldset style="border:1px solid #995300;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
    $output .= "\n";
    $output .= '<legend style="color:#995300;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_controller_info').'&nbsp;&nbsp;</legend>';
    $output .= "\n";

    $output .= "<div style='color:#995300;font-weight:normal;padding:4px 0 4px 0'>".$this->CI->router->fetch_class()."/".$this->CI->router->fetch_method()."</div>";


    $output .= "</fieldset>";

    return $output;
  }
  // --------------------------------------------------------------------

  /**
   * Compile memory usage
   *
   * Display total used memory
   *
   * @access	public
   * @return	string
   */
  function _compile_memory_usage() {
    $output  = "\n\n";
    $output .= '<fieldset style="border:1px solid #5a0099;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
    $output .= "\n";
    $output .= '<legend style="color:#5a0099;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_memory_usage').'&nbsp;&nbsp;</legend>';
    $output .= "\n";

    if (function_exists('memory_get_usage') && ($usage = memory_get_usage()) != '') {
      $output .= "<div style='color:#5a0099;font-weight:normal;padding:4px 0 4px 0'>".number_format($usage).' bytes</div>';
    }
    else {
      $output .= "<div style='color:#5a0099;font-weight:normal;padding:4px 0 4px 0'>".$this->CI->lang->line('profiler_no_memory_usage')."</div>";
    }

    $output .= "</fieldset>";

    return $output;
  }

  // --------------------------------------------------------------------

  /**
   * Run the Profiler
   *
   * @access	private
   * @return	string
   */
  function run() {
    $output = "<div id='codeigniter_profiler' style='clear:both;background-color:#fff;padding:10px;'>";

    $output .= $this->_compile_uri_string();
    $output .= $this->_compile_controller_info();
    $output .= $this->_compile_memory_usage();
    $output .= $this->_compile_benchmarks();
    $output .= $this->_compile_get();
    $output .= $this->_compile_post();
    $output .= $this->_compile_queries();

    $output .= '</div>';

    return $output;
  }

}

// END CI_Profiler class

/* End of file Profiler.php */
/* Location: ./system/libraries/Profiler.php */